beta decay
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Related to Beta emission: Electron capture, gamma emission
beta decay
n.
Radioactive decay in which a beta particle is emitted by an atomic nucleus.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
beta decay
n
(General Physics) the radioactive transformation of an atomic nucleus accompanying the emission of an electron. It involves unit change of atomic number but none in mass number. Also called: beta transformation or beta process
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
be′ta decay`
n.
a radioactive process in which a beta particle is emitted from the nucleus of an atom.
[1930–35]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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| Noun | 1. |  beta decay - radioactive decay of an atomic nucleus that is accompanied by the emission of a beta particleradioactive decay, disintegration, decay - the spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation |
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